Supported formats Google Research supports structured facts in the subsequent formats, unless documented in any other case. Generally, we suggest using a format that's best that you should implement and sustain (usually, that's JSON-LD); all three formats are equally fantastic for Google, given that the markup is valid and effectively https://addons.prestashop.com/it/seo-indicizzazione-naturale/31857-google-rich-snippet-automatico-json-ld-open-graph-seo.html